/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Build a simpleFGameplayAbilitySpecfrom class, level and optional Input ID
virtual [FGameplayAbilitySpec](API\Plugins\GameplayAbilities\FGameplayAbilitySpec) BuildAbilitySpecFromClass ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UGameplayAbility](API\Plugins\GameplayAbilities\Abilities\UGameplayAbility) > AbilityClass, int32 Level, int32 InputID )